Wampserver 2.1 gives orange icon after install on Windows 7

Question

I just installed Wampserver 2.1 on my windows 7 64bit computer and the icon that should turn green, turns orange, saying that the server is not ready.

The result is

Answer 1

I use Wampserver 2.2. I had the same problem, icon would just stay orange... Here's what I found out : If you click on the

Wamp Tray Icon > Apache > Service > Test Port 80

Well that showed me what was already using port 80: Server : Microsoft-HTTPAPI/2.0, which is not what I wanted... So I did like suggested above and changed the value of Listen 80 in http.conf to Listen 81. Stopped and restarted and it works.